Know exactly what to train today, how hard to push, and when to rest - based on how your body actually feels.
Works with just your iPhone. Apple Watch optional.
Limited beta access. We onboard users gradually to keep quality high.
Full Body Workout
5 exercises · ~40 min
↓ Volume reduced by 10%
Because you slept less than usual last night.
Updated daily based on your recovery and feedback.
Gets smarter after every workout.
Most fitness apps either show you data or give you a fixed plan. Cortiv connects the two - and decides what your training should look like today.
Cortiv reads your recovery, sleep, and training data automatically through Apple Health.
Every morning, Cortiv decides how hard you should train and adapts your session accordingly.
After each workout, one tap tells Cortiv how it felt. The next session gets smarter.
After every workout, one tap tells Cortiv how it felt. The next session adjusts automatically.
No static plans. No generic programs. The more you train, the smarter it gets.
Cortiv fits between a generic program you have to interpret - and a coach you have to pay.
Consistent, not elite. Cortiv adapts to the load you can actually sustain.
Enough guidance to stop guessing - without paying a trainer every month.
Apple Health, a watch, or just curious about how you sleep. Cortiv uses what you have.
Cortiv already runs the full training loop: brief → workout → feedback → adaptation.
What to train, how hard to push, and exactly why the session changed.
See the signal behind the decision - sleep, recovery, and readiness, explained.
Cortiv prescribes the load - and adjusts it session by session as you get stronger.
Most apps track what you did. Cortiv decides what you should do next.
| Whoop | Oura | Strong | Cortiv | |
|---|---|---|---|---|
| Reads your body data | ✅ | ✅ | ❌ | ✅ |
| Tells you what to do | ❌ | ❌ | ❌ | ✅ |
| Adapts your workout | ❌ | ❌ | ❌ | ✅ |
| Learns from feedback | ❌ | ❌ | ❌ | ✅ |
| Works without wearables | ❌ | ❌ | ✅ | ✅ |
← Swipe to compare →
Cortiv isn't just showing numbers - it changes the next decision automatically.
A workout every day, adjusted for how your body feels, that adapts as you train. No planning. No searching. No guessing what comes next.
Static programs go stale in weeks. Cortiv reads your data and your feedback and reshapes every session. The longer you use it, the more it fits you.
Wearables made body data mainstream. Cortiv is the missing layer between recovery data and the decision of what to do today.
Cortiv sits at the intersection of the fitness app market and the wearable market - but with a different promise: not better tracking, better decisions.
Year one is not "all fitness users."
Cortiv is in private beta on iOS. Request access and we'll reach out as spots open.